Group Memory (CM) was the primary public computerized bulletin board system. Established in 1973 in Berkeley, California, it used an SDS 940 timesharing system in San Francisco linked via a one hundred ten baud hyperlink to a teleprinter at a record retailer in Berkeley to let customers enter and retrieve messages. Individuals could place messages in the computer and then look via the memory for a specific discover. As soon as the system turned obtainable, the users demonstrated that it was a basic communications medium that may very well be used for artwork, literature, journalism, commerce, and social chatter. Group Memory was created by Lee Felsenstein, Efrem Lipkin, Ken Colstad, Jude Milhon, and Mark Szpakowski, Memory Wave acting as the Community Memory Challenge within the Resource One computer middle at Mission One in San Francisco. This group of laptop savvy pals and partners wanted to create a simple system that would function as a source of group information. Felsenstein took care of hardware, Lipkin software, and Szpakowski user interface and knowledge husbandry.

Group Memory Wave Program in its first part (1973-1975) was an experiment to see how individuals would react to utilizing a pc to trade info. At the moment few people had any direct contact with computers. CM was conceived as a tool to help strengthen the Berkeley group. The creators and founders of Neighborhood Memory shared the values of northern California counterculture of the 1960s, which included the celebration of free speech and the anti-struggle motion. They have been also supporters of ecological, low price, decentralized, and user-friendly know-how. CM had a presence in Vancouver starting in July 1974, led by Andrew Clement. A second incarnation of Community Memory, Memory Wave Program aimed at creating a global information community, appeared within the later seventies. Its main players were Efrem Lipkin and Ken Colstad. In his guide Hackers: Heroes of the pc Revolution, Steven Levy described how the founders of Community Memory started the organization. Among the founders have been involved in the Homebrew Computer Club, a corporation credited with significant impact in the development of the non-public computer.
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The first terminal was a Teletype Model 33 related to the SDS 940 pc by phone, using a ten character per second acoustic coupled modem. It was positioned at the highest of the stairs leading to Leopold's Information in Berkeley, proper next to a busy typical bulletin board. The Teletype machine was noisy, so it was encased in a cardboard field, with a transparent plastic high so what was being printed out might be seen, and with holes for one's palms whereas typing. This was the first time many people who were not studying a scientific topic had the opportunity to be able to make use of a computer. Brief directions have been mounted above the modified keyboard exhibiting how to send a message to the mainframe, methods to attach keywords to it to make it searchable and the way to look these keywords to find messages from others. To make use of a Community Memory terminal, the consumer would kind the command ADD, followed by the text of the item, after which by any keywords below which he/she desired the merchandise to be listed.

To search for an merchandise, the person would type the command Find followed by a logical construction of keywords connected with ANDs, ORs and NOTs. By the facet sat a CM assistant, attracting people's consideration and encouraging them to add and discover messages. In its approach, Group Memory adopted a artistic technique to funding the venture. They supplied customers with coin-operated terminals which may very well be read without cost